[OpenSIPS-Users] CANCEL with a To tag.

[Iñaki Baz Castillo]

2009/5/11 Alex Balashov <abalashov at evaristesys.com>:
> It sounds like the CANCEL with the To-tag should have a Route header as
> well in order for it to be processed like any other sequential/in-dialog
> request -- that is to say, under loose_route().

But it would be incorrect anyway. A CANCEL for an initial-INVITE
shouldn't have To tag since the CANCEL must end the whole UAC
transaction, not just an early-dialog.


> Or, the CANCEL is intended for OpenSIPS itself, in which case it should
> not have a To-tag.

The CANCEL is always for OpenSIPS since CANCEL is hop by hop.



> I would not try to accommodate this broken UA if I were you.  When
> breakage is so fundamental, this way lies madness.

I agree.

-- 
Iñaki Baz Castillo
<ibc at aliax.net>